The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2003
Filed:
Dec. 19, 2001
Ruey-Shan Liu, Kaohsiung, TW;
Chung-Shan Institute of Science and Technology, Taoyuan, TW;
Abstract
An underwater electromechanical timer comprises a motor-driven timer assembly which includes a threaded member that engages an endless screw driven in rotation by means of a motor. Time programming of the timer is accomplished via presetting a length of sliding of the threaded member along the endless screw. The sliding threaded member causes a timely switching event of a device switch placed in the casing structure. The device switch, electrically connected to an external device, thereby activates the external device. The underwater electromechanical timer is activated via an activation mechanism that is externally exposed. Under an external pressure, the activation mechanism connects an output of the motor with the endless screw, and further turns on the motor. Resilient elements are further mounted between the motor and the endless screw and between the threaded member and the device switch to prevent undesired activation events.